Year	% (national estimate)
1983	47.42861434374978
1984	48.80181381111412
1985	48.914095835861225
1986	48.40673277146414
1987	48.7502724609317
1988	49.08999323220431
1989	49.690898341126726
1990	48.97080752625675
1991	48.22937464371336
1992	46.51907266644172
1993	45.45570513245263
1994	45.28920832187009
1995	44.89774949750411
1996	44.44737352145851
1997	44.49740934373512
1998	44.80861970437791
1999	44.92582647587225
2000	45.151428175115925
2001	44.36832915631085
2002	43.33495910053598
2003	42.507852566433115
2004	42.17614117518387
2005	42.328863647570735
2006	42.87826436441613
2007	42.68738795885319
2008	42.073529712763744
2009	39.56397184530462
2010	38.90788402155793
2011	39.104417720758974
2012	39.068329680113784
2013	39.24523648920681
2014	39.739648156204986
2015	40.298940224353586
2016	40.727121394858884
2017	41.23148875325217
2018	41.7014571629919
2019	41.96885293692456
2020	38.37072226914881
2021	41.11475075969898
2022	42.574575189326985
2023	43.29301085818546